上海交通大学学报

上海交通大学学报（自然版）

• 金属学与金属工艺 • 上一篇    下一篇

纳米贝氏体钢中的位错密度测定

李洪岩，金学军   

  1. （上海交通大学 材料科学与工程学院，　上海 200240）
  • 收稿日期:2009-03-10 修回日期:1900-01-01 出版日期:2010-05-31 发布日期:2010-05-31

Determination of Dislocation Density in Nanostructured Bainitic Steels

LI Hongyan,JIN Xuejun   

  1. (School of Materials Science and Engineering, Shanghai Jiaotong University, Shanghai 200240, China)
  • Received:2009-03-10 Revised:1900-01-01 Online:2010-05-31 Published:2010-05-31

摘要： 采用高分辨透射电子显微镜观察纳米贝氏体钢中铁素体的结构，并通过内耗方法测定了纳米贝氏体钢中铁素体的位错密度.结果表明，纳米贝氏体钢铁素体中分布着高密度的位错，其平均位错密度约为6.4×1015 m-2.

关键词: 纳米贝氏体, 　位错密度, 　内耗, 　Snoek-Koster峰

Abstract: The high dislocation density in nanostructured bainitic steels was verified by high resolution transmission electron microscopy (TEM). The dislocation density was measured by internal friction. The result shows that average dislocation density in nanostructured bainite is about 6.4×1015 m-2 using internal friction with medium frequency.

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